Private Foundation

THE G HAROLD & LEILA Y MATHERS CHARITABLE FOUNDATION

THE G HAROLD & LEILA Y MATHERS CHARITABLE FOUNDATION is a Private Foundation headquartered in RYE BROOK, NY. Financial data from the 2024 filing: $29.2M revenue, $18.5M expenses, $107.9M total assets. IRS filings disclose 610 grants awarded by this foundation, totaling roughly $116.0M.

EIN: 237441901 RYE BROOK, NY Latest filing: 2024
Total Revenue$29.2M
Total Expenses$18.5M
Total Assets$107.9M
Grants Given610
Grant Total$116.0M
Filing Years2019–2024

Before you apply to The G Harold & Leila Y Mathers Charitable Foundation

Accepts applications Published application instructions on its 2024 Form 990-PF.

Sometimes funds new orgs 23% of recent recipients were first-time grantees (2022–2024).

Who to contact, what to include, deadlines, typical grant size and geographic focus are available with membership.

Sample Grants Given

ROCKEFELLER UNIVERSITY
NEW YORK, NY · 2024
RESEARCH PROJECT
$277,200
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
BOSTON, MA · 2024
RESEARCH PROJECT
$270,000
YALE UNIVERSITY
NEW HAVEN, CT · 2024
RESEARCH PROJECT
$268,534
CALIFORNIA INSTITUTE OF TECHNOLOGY
PASADENA, CA · 2024
RESEARCH PROJECT
$264,398
LELAND STANFORD JUNIOR UNIVERSITY
STANFORD, CA · 2024
RESEARCH PROJECT
$259,200

Showing up to 5 of 610 total records — full history available with membership.

Officers & Directors

DIRECTOR David Boyle
SECRETARY/DIRECTOR Howard Chester
DIRECTOR Judy Herman
DIRECTOR Peter Gottlieb
PRES/DIR Richard Handelman
DIRECTOR Scott Handelman

Officer compensation and complete director data available with membership.

Top Grant Purposes

Research & Policy
$104,639,962 520 grants
General Support
$1,529,794 44 grants
Health & Medicine
$317,026 3 grants
Civil Rights & Social Justice
$228,406 2 grants
Unspecified
$9,991,299 39 grants

Financial Trends

Year Revenue Expenses Assets
2024 $29.2M $18.5M $107.9M
2023 $23.5M $16.3M $99.9M
2022 $20.9M $23.4M $96.4M
2020 $15.7M $16.5M $97.6M
2019 $14.7M $17.2M $98.3M

Between 2019 and 2024, reported annual revenue grew from $14.7M to $29.2M (+99%), with total assets most recently reported at $107.9M.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in CA, CT, DC, GA, IL, KS, and 4 other states.

CACTDCGAILKSMAMDMIMO

Full geographic grant map with state-by-state breakdown available with membership.

See the full picture for THE G HAROLD & LEILA Y MATHERS CHARITABLE FOUNDATION

Complete financials, all 610 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 880,000+ organizations.

Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports
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